6 research outputs found
ΠΠ½Π°Π»ΠΈΠ· ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π΄Π²ΡΡ ΡΠ°Π±ΠΎΡΠΈΡ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠ΅ΠΉ Ρ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌΠΈ Π²ΡΠ·ΠΊΠΎΡΠΏΡΡΠ³ΠΈΠΌΠΈ Ρ Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ°ΠΌΠΈ ΠΏΡΠΈ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠΌ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠΈ Π½Π° ΠΏΡΠΈΠ·Π°Π±ΠΎΠΉΠ½ΡΡ Π·ΠΎΠ½Ρ ΠΏΠ»Π°ΡΡΠ°
Combination of hydrodynamic impact on the formation with acid treatment may be seen as a promising direction in the field of well development and repair in complex geological conditions. With multiple repetition of hydraulic shocks in conjunction with the injection of acid solution, the depth and opening of cracks gradually increases, which contributes to a deeper penetration of the acid solution into the reservoir. The article presents analytical studies, which are aimed at determining the effectiveness of applying the technology of hydrodynamic impact on the bottomhole zone of an oil reservoir when using two fluids with different viscoelastic characteristics as a working fluid. They are devoted to determining the pressure drop at the borehole bottom depending on the initial applied pressure at the wellhead, the velocity of the shock wave, the viscosity of the working and well fluid, and their quantity. These studies were based on the well-known models of Thomson β TΠ°t and Maxwell, considering viscous liquid flow. The dependence obtained proves that with an increase in the pressure pulse generated at the wellhead, the development of pressure pulses at the borehole bottom is a power-law dependence, and with significant volumes of fluid in contact with the bottomhole formation zone, the pressure drop generated at the borehole bottom does not depend only on pressure pulses generated at the wellhead, but also on the dynamic viscosity of this fluid. Conducted studies have shown the effectiveness of hydrodynamic impact technology application when using two liquids with different viscoelastic characteristics and obtaining a synergistic effect during the development and repair of wells in low-permeable reservoirs. Analytical studies were based on data from previously conducted experimental industrial tests on the operating injection well.ΠΠ΅ΡΡΠΏΠ΅ΠΊΡΠΈΠ²Π½ΡΠΌ Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½ΠΈΠ΅ΠΌ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠΊΠΈ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ ΠΎΡΠ²ΠΎΠ΅Π½ΠΈΡ ΠΈ ΡΠ΅ΠΌΠΎΠ½ΡΠ° ΡΠΊΠ²Π°ΠΆΠΈΠ½ Π² ΡΠ»ΠΎΠΆΠ½ΡΡ
Π³Π΅ΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΈΡ
ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΡΠ²Π»ΡΠ΅ΡΡΡ ΡΠΎΠ²ΠΌΠ΅ΡΠ΅Π½ΠΈΠ΅ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ Π½Π° ΠΏΠ»Π°ΡΡ Ρ ΠΊΠΈΡΠ»ΠΎΡΠ½ΠΎΠΉ ΠΎΠ±ΡΠ°Π±ΠΎΡΠΊΠΎΠΉ. ΠΡΠΈ ΠΌΠ½ΠΎΠ³ΠΎΠΊΡΠ°ΡΠ½ΠΎΠΌ ΠΏΠΎΠ²ΡΠΎΡΠ΅Π½ΠΈΠΈ Π³ΠΈΠ΄ΡΠΎΡΠ΄Π°ΡΠΎΠ² Π² ΡΠΎΠ²ΠΎΠΊΡΠΏΠ½ΠΎΡΡΠΈ Ρ Π·Π°ΠΊΠ°ΡΠΊΠΎΠΉ ΠΊΠΈΡΠ»ΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΡΡΠ²ΠΎΡΠ° ΠΏΠΎΡΡΠ΅ΠΏΠ΅Π½Π½ΠΎ ΡΠ²Π΅Π»ΠΈΡΠΈΠ²Π°ΡΡΡΡ Π³Π»ΡΠ±ΠΈΠ½Π° ΠΈ ΡΠ°ΡΠΊΡΡΡΠΎΡΡΡ ΡΡΠ΅ΡΠΈΠ½, ΡΡΠΎ ΡΠΏΠΎΡΠΎΠ±ΡΡΠ²ΡΠ΅Ρ Π±ΠΎΠ»Π΅Π΅ Π³Π»ΡΠ±ΠΎΠΊΠΎΠΌΡ ΠΏΡΠΎΠ½ΠΈΠΊΠ½ΠΎΠ²Π΅Π½ΠΈΡ ΠΊΠΈΡΠ»ΠΎΡΠ½ΠΎΠ³ΠΎ ΡΠ°ΡΡΠ²ΠΎΡΠ° Π² ΠΏΠ»Π°ΡΡ. Π ΡΡΠ°ΡΡΠ΅ ΠΏΡΠΎΠ²ΠΎΠ΄ΡΡΡΡ Π°Π½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ, Π½Π°ΠΏΡΠ°Π²Π»Π΅Π½Π½ΡΠ΅ Π½Π° ΡΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΈΠ΅ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ Π½Π° ΠΏΡΠΈΠ·Π°Π±ΠΎΠΉΠ½ΡΡ Π·ΠΎΠ½Ρ Π½Π΅ΡΡΡΠ½ΠΎΠ³ΠΎ ΠΏΠ»Π°ΡΡΠ° ΠΏΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΡΠ°Π±ΠΎΡΠ΅ΠΉ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠΈ Π΄Π²ΡΡ
ΠΆΠΈΠ΄ΠΊΠΎΡΡΠ΅ΠΉ Ρ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌΠΈ Π²ΡΠ·ΠΊΠΎΡΠΏΡΡΠ³ΠΈΠΌΠΈ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ°ΠΌΠΈ. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ ΠΏΠ΅ΡΠ΅ΠΏΠ°Π΄ Π΄Π°Π²Π»Π΅Π½ΠΈΡ Π½Π° Π·Π°Π±ΠΎΠ΅ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ, Π·Π°Π²ΠΈΡΡΡΠΈΠΉ ΠΎΡ Π½Π°ΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΈΠΊΠ»Π°Π΄ΡΠ²Π°Π΅ΠΌΠΎΠ³ΠΎ Π΄Π°Π²Π»Π΅Π½ΠΈΡ Π½Π° ΡΡΡΡΠ΅, ΡΠΊΠΎΡΠΎΡΡΠΈ ΡΠ΄Π°ΡΠ½ΠΎΠΉ Π²ΠΎΠ»Π½Ρ, Π²ΡΠ·ΠΊΠΎΡΡΠΈ ΡΠ°Π±ΠΎΡΠ΅ΠΉ ΠΈ ΡΠΊΠ²Π°ΠΆΠΈΠ½Π½ΠΎΠΉ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠ΅ΠΉ ΠΈ ΠΈΡ
ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²Π°. ΠΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π±Π°Π·ΠΈΡΠΎΠ²Π°Π»ΠΈΡΡ Π½Π° ΠΈΠ·Π²Π΅ΡΡΠ½ΡΡ
ΠΌΠΎΠ΄Π΅Π»ΡΡ
ΡΠ΅ΡΠ΅Π½ΠΈΡ Π²ΡΠ·ΠΊΠΎΠΉ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠΈ Π’ΠΎΠΌΡΠΎΠ½Π° β Π’ΡΡΠ° ΠΈ ΠΠ°ΠΊΡΠ²Π΅Π»Π»Π°. ΠΠΎΠ»ΡΡΠ΅Π½Π½Π°Ρ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΡ Π΄ΠΎΠΊΠ°Π·ΡΠ²Π°Π΅Ρ, ΡΡΠΎ ΠΏΡΠΈ ΡΠ²Π΅Π»ΠΈΡΠ΅Π½ΠΈΠΈ ΠΈΠΌΠΏΡΠ»ΡΡΠ° Π΄Π°Π²Π»Π΅Π½ΠΈΡ, ΡΠ³Π΅Π½Π΅ΡΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ Π½Π° ΡΡΡΡΠ΅ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ, ΡΠ°Π·Π²ΠΈΡΠΈΠ΅ ΠΈΠΌΠΏΡΠ»ΡΡΠΎΠ² Π΄Π°Π²Π»Π΅Π½ΠΈΡ Π½Π° Π·Π°Π±ΠΎΠ΅ ΠΏΡΠΎΠΈΡΡ
ΠΎΠ΄ΠΈΡ ΠΏΠΎ ΡΡΠ΅ΠΏΠ΅Π½Π½ΠΎΠΉ Π·Π°Π²ΠΈΡΠΈΠΌΠΎΡΡΠΈ ΠΏΡΠΈ Π·Π½Π°ΡΠΈΡΠ΅Π»ΡΠ½ΡΡ
ΠΎΠ±ΡΠ΅ΠΌΠ°Ρ
ΠΆΠΈΠ΄ΠΊΠΎΡΡΠΈ, ΠΊΠΎΠ½ΡΠ°ΠΊΡΠΈΡΡΡΡΠ΅ΠΉ Ρ ΠΏΡΠΈΠ·Π°Π±ΠΎΠΉΠ½ΠΎΠΉ Π·ΠΎΠ½ΠΎΠΉ ΠΏΠ»Π°ΡΡΠ°; ΠΏΠ΅ΡΠ΅ΠΏΠ°Π΄ Π΄Π°Π²Π»Π΅Π½ΠΈΡ, ΡΠΎΠ·Π΄Π°Π²Π°Π΅ΠΌΡΠΉ Π½Π° Π·Π°Π±ΠΎΠ΅ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ, Π·Π°Π²ΠΈΡΠΈΡ Π½Π΅ ΡΠΎΠ»ΡΠΊΠΎ ΠΎΡ ΠΈΠΌΠΏΡΠ»ΡΡΠΎΠ² Π΄Π°Π²Π»Π΅Π½ΠΈΡ, Π³Π΅Π½Π΅ΡΠΈΡΡΠ΅ΠΌΡΡ
Π½Π° ΡΡΡΡΠ΅ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ, Π½ΠΎ ΠΈ ΠΎΡ Π΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ Π²ΡΠ·ΠΊΠΎΡΡΠΈ ΡΡΠΎΠΉ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠΈ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½Π½ΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π΄ΠΎΠΊΠ°Π·ΡΠ²Π°ΡΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΠΈ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΠΏΡΠΈ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°Π½ΠΈΠΈ Π΄Π²ΡΡ
ΠΆΠΈΠ΄ΠΊΠΎΡΡΠ΅ΠΉ Ρ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌΠΈ Π²ΡΠ·ΠΊΠΎΡΠΏΡΡΠ³ΠΈΠΌΠΈ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ°ΠΌΠΈ ΠΈ ΠΏΠΎΠ»ΡΡΠ΅Π½ΠΈΠ΅ ΡΠΈΠ½Π΅ΡΠ³Π΅ΡΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΡΡΠ΅ΠΊΡΠ° ΠΏΡΠΈ ΠΎΡΠ²ΠΎΠ΅Π½ΠΈΠΈ ΠΈ ΡΠ΅ΠΌΠΎΠ½ΡΠ΅ ΡΠΊΠ²Π°ΠΆΠΈΠ½ Π² Π½ΠΈΠ·ΠΊΠΎΠΏΡΠΎΠ½ΠΈΡΠ°Π΅ΠΌΡΡ
ΠΊΠΎΠ»Π»Π΅ΠΊΡΠΎΡΠ°Ρ
. ΠΠ½Π°Π»ΠΈΡΠΈΡΠ΅ΡΠΊΠΈΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ Π±Π°Π·ΠΈΡΠΎΠ²Π°Π»ΠΈΡΡ Π½Π° Π΄Π°Π½Π½ΡΡ
ΡΠ°Π½Π΅Π΅ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Π½ΠΎΠ³ΠΎ ΠΎΠΏΡΡΠ½ΠΎ-ΠΏΡΠΎΠΌΡΡΠ»Π΅Π½Π½ΠΎΠ³ΠΎ ΠΈΡΠΏΡΡΠ°Π½ΠΈΡ Π½Π° Π΄Π΅ΠΉΡΡΠ²ΡΡΡΠ΅ΠΉ Π½Π°Π³Π½Π΅ΡΠ°ΡΠ΅Π»ΡΠ½ΠΎΠΉ ΡΠΊΠ²Π°ΠΆΠΈΠ½Π΅
ΠΠ»Π΅ΠΊΡΡΠΎΡΠ½Π°Π±ΠΆΠ΅Π½ΠΈΠ΅ ΡΡΠ°Π½ΡΠΈΠΈ Π½Π°Π³ΡΠ΅Π²Π° Π½Π΅ΡΡΠΈ Π² ΡΠΊΠ²Π°ΠΆΠΈΠ½Π΅ ΠΎΡ Π²Π΅ΡΡΠΎΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ
In this article, the authors reviewed a new technology to prevent the formation of asphalt-resin-paraffin deposits by the thermal method of electrothermal impact on the oil wellbore shaft using a wind-electric installation as an autonomous power source. The advantage of this thermal stimulation technique lies in its continuous nature, which will allow keeping the clear opening of the tubing constant. The scheme of the autonomous system for down-hole electric heating of oil is presented. A tubular or induction heater can serve as an electric heating element placed in the well. The heating element of the system can be used in the wells exploited by freeflow, gas lift and mechanized methods, while its installation does not require an overhaul. The paraffin oil saturation temperature and temperature distribution over the depth of the well were defined. The amount of heat, which must be transferred to the oil mixture in the tubing in order to ensure effective operation of the well, taking into account the dynamic state of the system, is calculated. The optimal depth of the heating element's location in the well and its power was determined. The calculation of the required power for wind-electric installation to maintain the set temperature in the wellbore was performed. Having conducted the studies, it was revealed that in order to prevent the asphalt-resin-paraffin deposits formation on the tubing walls of oil wells, it is expedient to use the in-line heater, which maintains the average steady-state temperature along the wellbore and at the wellhead above the initial crystallization point of the asphaltresin-paraffin deposits. The application of the developed electrothermal system is relevant in the conditions of formation of asphalt-resin-paraffin deposits in the wellbore shaft at the fields, which do not have a connection to the centralized power grid.Π Π°ΡΡΠΌΠΎΡΡΠ΅Π½Π° Π½ΠΎΠ²Π°Ρ ΡΠ΅Ρ
Π½ΠΎΠ»ΠΎΠ³ΠΈΡ ΠΏΡΠ΅Π΄ΡΠΏΡΠ΅ΠΆΠ΄Π΅Π½ΠΈΡ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ Π°ΡΡΠ°Π»ΡΡΠΎΡΠΌΠΎΠ»ΠΎΠΏΠ°ΡΠ°ΡΠΈΠ½ΠΎΠ²ΡΡ
ΠΎΡΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ ΡΠ΅ΠΏΠ»ΠΎΠ²ΡΠΌ ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΡΠ»Π΅ΠΊΡΡΠΎΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ Π½Π° ΡΡΠ²ΠΎΠ» Π½Π΅ΡΡΡΠ½ΠΎΠΉ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ Ρ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ Π²Π΅ΡΡΠΎΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ Π² ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ Π°Π²ΡΠΎΠ½ΠΎΠΌΠ½ΠΎΠ³ΠΎ ΠΈΡΡΠΎΡΠ½ΠΈΠΊΠ° ΠΏΠΈΡΠ°Π½ΠΈΡ. ΠΠΎΡΡΠΎΠΈΠ½ΡΡΠ²ΠΎΠΌ Π΄Π°Π½Π½ΠΎΠ³ΠΎ ΡΠ΅ΠΏΠ»ΠΎΠ²ΠΎΠ³ΠΎ ΡΠΏΠΎΡΠΎΠ±Π° Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΡΠ²Π»ΡΠ΅ΡΡΡ Π΅Π³ΠΎ Π½Π΅ΠΏΡΠ΅ΡΡΠ²Π½ΡΠΉ Ρ
Π°ΡΠ°ΠΊΡΠ΅Ρ, ΡΡΠΎ ΠΏΠΎΠ·Π²ΠΎΠ»ΡΠ΅Ρ ΡΠΎΡ
ΡΠ°Π½ΡΡΡ ΠΏΡΠΎΠΏΡΡΠΊΠ½ΠΎΠ΅ ΡΠ΅ΡΠ΅Π½ΠΈΠ΅ Π½Π°ΡΠΎΡΠ½ΠΎ-ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΎΡΠ½ΡΡ
ΡΡΡΠ± ΠΏΠΎΡΡΠΎΡΠ½Π½ΡΠΌ. ΠΡΠ΅Π΄ΡΡΠ°Π²Π»Π΅Π½Π° ΡΡ
Π΅ΠΌΠ° Π°Π²ΡΠΎΠ½ΠΎΠΌΠ½ΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° Π΄Π»Ρ Π²Π½ΡΡΡΠΈΡΠΊΠ²Π°ΠΆΠΈΠ½Π½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΠΏΡΠΎΠ³ΡΠ΅Π²Π° Π½Π΅ΡΡΠΈ. Π ΠΊΠ°ΡΠ΅ΡΡΠ²Π΅ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π°Π³ΡΠ΅Π²Π°ΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ°, ΡΠ°Π·ΠΌΠ΅ΡΠ°Π΅ΠΌΠΎΠ³ΠΎ Π² ΡΠΊΠ²Π°ΠΆΠΈΠ½Π΅, ΠΌΠΎΠΆΠ΅Ρ Π²ΡΡΡΡΠΏΠ°ΡΡ ΡΡΡΠ±ΡΠ°ΡΡΠΉ ΠΈΠ»ΠΈ ΠΈΠ½Π΄ΡΠΊΡΠΈΠΎΠ½Π½ΡΠΉ Π½Π°Π³ΡΠ΅Π²Π°ΡΠ΅Π»Ρ. ΠΠ°Π³ΡΠ΅Π²Π°ΡΠ΅Π»ΡΠ½ΡΠΉ ΡΠ»Π΅ΠΌΠ΅Π½Ρ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° ΠΌΠΎΠΆΠ΅Ρ ΠΏΡΠΈΠΌΠ΅Π½ΡΡΡΡΡ Π² ΡΠΊΠ²Π°ΠΆΠΈΠ½Π°Ρ
, ΡΠΊΡΠΏΠ»ΡΠ°ΡΠΈΡΡΠ΅ΠΌΡΡ
ΡΠΎΠ½ΡΠ°Π½Π½ΡΠΌ, Π³Π°Π·Π»ΠΈΡΡΠ½ΡΠΌ ΠΈ ΠΌΠ΅Ρ
Π°Π½ΠΈΠ·ΠΈΡΠΎΠ²Π°Π½Π½ΡΠΌ ΡΠΏΠΎΡΠΎΠ±Π°ΠΌΠΈ, ΠΏΡΠΈ ΡΡΠΎΠΌ Π΄Π»Ρ Π΅Π³ΠΎ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ Π½Π΅ ΡΡΠ΅Π±ΡΠ΅ΡΡΡ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡ ΠΊΠ°ΠΏΠΈΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ΅ΠΌΠΎΠ½ΡΠ°. ΠΠΏΡΠ΅Π΄Π΅Π»Π΅Π½Ρ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΠ° Π½Π°ΡΡΡΠ΅Π½ΠΈΡ Π½Π΅ΡΡΠΈ ΠΏΠ°ΡΠ°ΡΠΈΠ½ΠΎΠΌ ΠΈ Π΅Π΅ ΡΠ°ΡΠΏΡΠ΅Π΄Π΅Π»Π΅Π½ΠΈΠ΅ ΠΏΠΎ Π³Π»ΡΠ±ΠΈΠ½Π΅ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ. Π Π°ΡΡΡΠΈΡΠ°Π½ΠΎ ΠΊΠΎΠ»ΠΈΡΠ΅ΡΡΠ²ΠΎ ΡΠ΅ΠΏΠ»ΠΎΡΡ, ΠΊΠΎΡΠΎΡΠΎΠ΅ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎ ΡΠΎΠΎΠ±ΡΠΈΡΡ ΡΠΊΠ²Π°ΠΆΠΈΠ½Π½ΠΎΠΉ ΠΏΡΠΎΠ΄ΡΠΊΡΠΈΠΈ Π² Π½Π°ΡΠΎΡΠ½ΠΎ-ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΎΡΠ½ΡΡ
ΡΡΡΠ±Π°Ρ
Π΄Π»Ρ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠ΅Π½ΠΈΡ ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΠ³ΠΎ ΡΠ΅ΠΆΠΈΠΌΠ° ΡΠΊΡΠΏΠ»ΡΠ°ΡΠ°ΡΠΈΠΈ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ Ρ ΡΡΠ΅ΡΠΎΠΌ Π΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ ΡΠΈΡΡΠ΅ΠΌΡ. Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Ρ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½Π°Ρ Π³Π»ΡΠ±ΠΈΠ½Π° ΡΠ°ΡΠΏΠΎΠ»ΠΎΠΆΠ΅Π½ΠΈΡ Π½Π°Π³ΡΠ΅Π²Π°ΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΌΠ΅Π½ΡΠ° Π² ΡΠΊΠ²Π°ΠΆΠΈΠ½Π΅ ΠΈ Π΅Π³ΠΎ ΠΌΠΎΡΠ½ΠΎΡΡΡ. ΠΡΠΏΠΎΠ»Π½Π΅Π½ ΡΠ°ΡΡΠ΅Ρ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΠΎΠΉ ΠΌΠΎΡΠ½ΠΎΡΡΠΈ Π²Π΅ΡΡΠΎΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ Π΄Π»Ρ ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠ°Π½ΠΈΡ Π·Π°Π΄Π°Π½Π½ΠΎΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΡ Π² ΡΡΠ²ΠΎΠ»Π΅ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ. ΠΡΠΎΠ²Π΅Π΄Π΅Π½Π½ΡΠ΅ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, ΡΡΠΎ Π΄Π»Ρ ΠΏΡΠ΅Π΄ΠΎΡΠ²ΡΠ°ΡΠ΅Π½ΠΈΡ ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ Π°ΡΡΠ°Π»ΡΡΠΎΡΠΌΠΎΠ»ΠΎΠΏΠ°ΡΠ°ΡΠΈΠ½ΠΎΠ²ΡΡ
ΠΎΡΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ Π½Π° ΡΡΠ΅Π½ΠΊΠ°Ρ
Π½Π°ΡΠΎΡΠ½ΠΎ-ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΎΡΠ½ΡΡ
ΡΡΡΠ± Π½Π΅ΡΡΡΠ½ΡΡ
ΡΠΊΠ²Π°ΠΆΠΈΠ½ ΡΠ΅Π»Π΅ΡΠΎΠΎΠ±ΡΠ°Π·Π½ΠΎ ΠΈΡΠΏΠΎΠ»ΡΠ·ΠΎΠ²Π°ΡΡ ΠΏΡΠΎΡΠΎΡΠ½ΡΠΉ ΡΠ»Π΅ΠΊΡΡΠΎΠ½Π°Π³ΡΠ΅Π²Π°ΡΠ΅Π»Ρ, ΠΊΠΎΡΠΎΡΡΠΉ ΠΎΠ±Π΅ΡΠΏΠ΅ΡΠΈΠ²Π°Π΅Ρ ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠ°Π½ΠΈΠ΅ ΡΡΠ΅Π΄Π½Π΅ΠΉ ΡΡΡΠ°Π½ΠΎΠ²ΠΈΠ²ΡΠ΅ΠΉΡΡ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΡ ΠΏΠΎ ΡΡΠ²ΠΎΠ»Ρ ΠΈ Π½Π° ΡΡΡΡΠ΅ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ Π²ΡΡΠ΅ ΡΠΎΡΠΊΠΈ Π½Π°ΡΠ°Π»ΡΠ½ΠΎΠΉ ΠΊΡΠΈΡΡΠ°Π»Π»ΠΈΠ·Π°ΡΠΈΠΈ Π°ΡΡΠ°Π»ΡΡΠΎΡΠΌΠΎΠ»ΠΎΠΏΠ°ΡΠ°ΡΠΈΠ½ΠΎΠ²ΡΡ
ΠΎΡΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ. ΠΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ ΡΠ°Π·ΡΠ°Π±ΠΎΡΠ°Π½Π½ΠΎΠ³ΠΎ ΡΠ»Π΅ΠΊΡΡΠΎΡΠ΅ΡΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ ΠΊΠΎΠΌΠΏΠ»Π΅ΠΊΡΠ° ΡΠ²Π»ΡΠ΅ΡΡΡ Π°ΠΊΡΡΠ°Π»ΡΠ½ΡΠΌ Π² ΡΡΠ»ΠΎΠ²ΠΈΡΡ
ΠΎΠ±ΡΠ°Π·ΠΎΠ²Π°Π½ΠΈΡ Π°ΡΡΠ°Π»ΡΡΠΎΡΠΌΠΎΠ»ΠΎΠΏΠ°ΡΠ°ΡΠΈΠ½ΠΎΠ²ΡΡ
ΠΎΡΠ»ΠΎΠΆΠ΅Π½ΠΈΠΉ Π² ΡΡΠ²ΠΎΠ»Π΅ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ Π½Π° ΠΌΠ΅ΡΡΠΎΡΠΎΠΆΠ΄Π΅Π½ΠΈΡΡ
, Π½Π΅ ΠΈΠΌΠ΅ΡΡΠΈΡ
ΠΏΠΎΠ΄ΠΊΠ»ΡΡΠ΅Π½ΠΈΡ ΠΊ ΡΠ΅Π½ΡΡΠ°Π»ΠΈΠ·ΠΎΠ²Π°Π½Π½ΠΎΠΉ ΡΠ½Π΅ΡΠ³ΠΎΡΠΈΡΡΠ΅ΠΌΠ΅ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ Π΄Π»Ρ ΠΏΠΎΠ΄Π΄Π΅ΡΠΆΠ°Π½ΠΈΡ Π·Π°Π΄Π°Π½Π½ΠΎΠΉ ΡΠ΅ΠΌΠΏΠ΅ΡΠ°ΡΡΡΡ Π² ΡΡΠ²ΠΎΠ»Π΅ ΡΠΊΠ²Π°ΠΆΠΈΠ½Ρ
ΠΠ½Π°Π»ΠΈΠ· ΡΡΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΠΈ ΠΏΡΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡ Π΄Π²ΡΡ ΡΠ°Π±ΠΎΡΠΈΡ ΠΆΠΈΠ΄ΠΊΠΎΡΡΠ΅ΠΉ Ρ ΡΠ°Π·Π»ΠΈΡΠ½ΡΠΌΠΈ Π²ΡΠ·ΠΊΠΎΡΠΏΡΡΠ³ΠΈΠΌΠΈ Ρ Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ°ΠΌΠΈ ΠΏΡΠΈ Π³ΠΈΠ΄ΡΠΎΠ΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠΌ Π²ΠΎΠ·Π΄Π΅ΠΉΡΡΠ²ΠΈΠΈ Π½Π° ΠΏΡΠΈΠ·Π°Π±ΠΎΠΉΠ½ΡΡ Π·ΠΎΠ½Ρ ΠΏΠ»Π°ΡΡΠ°
Combination of hydrodynamic impact on the formation with acid treatment may be seen as a promising direction in the field of well development and repair in complex geological conditions. With multiple repetition of hydraulic shocks in conjunction with the injection of acid solution, the depth and opening of cracks gradually increases, which contributes to a deeper penetration of the acid solution into the reservoir. The article presents analytical studies, which are aimed at determining the effectiveness of applying the technology of hydrodynamic impact on the bottomhole zone of an oil reservoir when using two fluids with different viscoelastic characteristics as a working fluid. They are devoted to determining the pressure drop at the borehole bottom depending on the initial applied pressure at the wellhead, the velocity of the shock wave, the viscosity of the working and well fluid, and their quantity. These studies were based on the well-known models of Thomson β TΠ°t and Maxwell, considering viscous liquid flow. The dependence obtained proves that with an increase in the pressure pulse generated at the wellhead, the development of pressure pulses at the borehole bottom is a power-law dependence, and with significant volumes of fluid in contact with the bottomhole formation zone, the pressure drop generated at the borehole bottom does not depend only on pressure pulses generated at the wellhead, but also on the dynamic viscosity of this fluid. Conducted studies have shown the effectiveness of hydrodynamic impact technology application when using two liquids with different viscoelastic characteristics and obtaining a synergistic effect during the development and repair of wells in low-permeable reservoirs. Analytical studies were based on data from previously conducted experimental industrial tests on the operating injection well
ΠΠ»Π΅ΠΊΡΡΠΎΡΠ½Π°Π±ΠΆΠ΅Π½ΠΈΠ΅ ΡΡΠ°Π½ΡΠΈΠΈ Π½Π°Π³ΡΠ΅Π²Π° Π½Π΅ΡΡΠΈ Π² ΡΠΊΠ²Π°ΠΆΠΈΠ½Π΅ ΠΎΡ Π²Π΅ΡΡΠΎΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ
In this article, the authors reviewed a new technology to prevent the formation of asphalt-resin-paraffin deposits by the thermal method of electrothermal impact on the oil wellbore shaft using a wind-electric installation as an autonomous power source. The advantage of this thermal stimulation technique lies in its continuous nature, which will allow keeping the clear opening of the tubing constant. The scheme of the autonomous system for down-hole electric heating of oil is presented. A tubular or induction heater can serve as an electric heating element placed in the well. The heating element of the system can be used in the wells exploited by free-flow, gas lift and mechanized methods, while its installation does not require an overhaul. The paraffin oil saturation temperature and temperature distribution over the depth of the well were defined. The amount of heat, which must be transferred to the oil mixture in the tubing in order to ensure effective operation of the well, taking into account the dynamic state of the system, is calculated. The optimal depth of the heating element's location in the well and its power was determined. The calculation of the required power for wind-electric installation to maintain the set temperature in the wellbore was performed. Having conducted the studies, it was revealed that in order to prevent the asphalt-resin-paraffin deposits formation on the tubing walls of oil wells, it is expedient to use the in-line heater, which maintains the average steady-state temperature along the wellbore and at the wellhead above the initial crystallization point of the asphalt-resin-paraffin deposits. The application of the developed electrothermal system is relevant in the conditions of formation of asphalt-resin-paraffin deposits in the wellbore shaft at the fields, which do not have a connection to the centralized power grid
ΠΠ»Π΅ΠΊΡΡΠΎΡΠ½Π°Π±ΠΆΠ΅Π½ΠΈΠ΅ ΡΡΠ°Π½ΡΠΈΠΈ Π½Π°Π³ΡΠ΅Π²Π° Π½Π΅ΡΡΠΈ Π² ΡΠΊΠ²Π°ΠΆΠΈΠ½Π΅ ΠΎΡ Π²Π΅ΡΡΠΎΡΠ»Π΅ΠΊΡΡΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΡΡΠ°Π½ΠΎΠ²ΠΊΠΈ
In this article, the authors reviewed a new technology to prevent the formation of asphalt-resin-paraffin deposits by the thermal method of electrothermal impact on the oil wellbore shaft using a wind-electric installation as an autonomous power source. The advantage of this thermal stimulation technique lies in its continuous nature, which will allow keeping the clear opening of the tubing constant. The scheme of the autonomous system for down-hole electric heating of oil is presented. A tubular or induction heater can serve as an electric heating element placed in the well. The heating element of the system can be used in the wells exploited by free-flow, gas lift and mechanized methods, while its installation does not require an overhaul. The paraffin oil saturation temperature and temperature distribution over the depth of the well were defined. The amount of heat, which must be transferred to the oil mixture in the tubing in order to ensure effective operation of the well, taking into account the dynamic state of the system, is calculated. The optimal depth of the heating element's location in the well and its power was determined. The calculation of the required power for wind-electric installation to maintain the set temperature in the wellbore was performed. Having conducted the studies, it was revealed that in order to prevent the asphalt-resin-paraffin deposits formation on the tubing walls of oil wells, it is expedient to use the in-line heater, which maintains the average steady-state temperature along the wellbore and at the wellhead above the initial crystallization point of the asphalt-resin-paraffin deposits. The application of the developed electrothermal system is relevant in the conditions of formation of asphalt-resin-paraffin deposits in the wellbore shaft at the fields, which do not have a connection to the centralized power grid